Standard drill bit sizes for CNC machining | Protolabs Network
6.8mm Metric M35 Cobalt Steel Extremely Heat Resistant Twist Drill Bit of 1pcs with Straight
Keo Countersink, Pilot 6.8 mm, CTRbore 15 mm 56215 | Zoro
Uxcell M8 x 1.25 Left Hand Thread Milling Tap and Round Die and 6.8mm Drill Bit Set - Walmart.com
Dormer 6.8 mm A160 Jobber Drill 5969636, Right Hand Cut, Bright/Steam Tempered Finish, 109 mm Overall Length, 4 x D Standard Spiral Flute, High-Speed Steel | RSHughes.com
uxcell M8 x 1.25 Spiral Flute Tap and 6.8mm Twist Drill Bit Set, Metric Titanium Plated 6542 High Speed Steel Machine Threading Screw Thread Tap Drilling Tool - Amazon.com